Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '222d60ba0d59f8e54f1c48d44d6433961cdf3441319bba2444c62061f5cd2871' 
  AND token = '0UhXCdtN9wgfgbnV9H81YaI1GmayPvxk/j23LGs4KHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}